7th Grade

1

• 7th Grade
• Unit 2
• Ecosystems
• Lesson 1
• Energy Flow
• Vocabulary of Instruction

2
Energy

• Ability to do work.

3
Producers

• Plants are called producers because they are able
  to use light energy from the Sun to produce food
  (sugar) from carbon dioxide and water.

4
Consumers

• Animals cannot make their own food so they must
  eat plants and/or other animals.
• There are three groups of consumers.
• Primary Consumers
• Secondary Consumers
• Tertiary Consumers

5
Decomposers

• Bacteria and fungi which feed on decaying matter.
• Decomposers speed up the decaying process that
  releases mineral salts back into the food chain
  for absorption by plants as nutrients.

6
Omnivores

• Animals and people who eat BOTH animals and
  plants are called omnivores.

7
Carnivore

• Are animals that eat other animals.
• carnivores that eat herbivores are called
  secondary consumers.
• carnivores that eat other carnivores are called
  tertiary consumers

8
Herbivore

• An animal that feeds on plants.Also known as (or
  primary consumers).

9
Food Chain, Food Web, and/or Food Networks

• Describes the feeding relationships between
  species in an ecological community. They
  graphically represent the transfer of material
  and energy from one species to another within an
  ecosystem.

10
Food Chain
11
Food Web
12
Abiotic

• Inanimate, inorganic, not living.
• Examples
• Water
• Soil
• Sunlight
• Rocks
• Wind/Air

13
Biotic

• Relating to, produced by, or caused by living 
  organisms.
• Examples
• Rabbit
• Wolf
• Bacteria
• Plants/Grass
• Mushroom/ Fungi